Can you think of any three-dimensional shape that comprises of exactly two surfaces?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Why do we preferably have round manhole covers and not square ones?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

What you cannot hold but it is yours?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

They are three errirs in this question. Can you find them?

Can you count the number of lines in the below picture?

Can you find out which options fits best with the missing column?